I did email Z personaly. No explanition. just told to use it.
I've heard the same thing some weeks ago chatting with guyz in poland, and in UK,
some did tryed yet. but which have used it, have nothing to say but good.
After all, talking about UGL, the source is realy important.
i assume you know already than nobody would et you use something dangerous for you.
If i remember well, correct me if i'm wrong.
BD never had batch number, or ISN, or lot Number to authentify the stuffs on their site, right?
So at that ime, all users only had to trust the source. i sense than nothing had change since that time...
But nobody is everybody, my point of view is not better than your. of corse not.